Facebook CEO Mark Zuckerberg will face a number of challenges with customers once the company goes public. (Eric Risberg - AP) As Facebook stands set to file for its historic initial public offering, CEO Mark Zuckerberg faces some pretty monumental leadership demands. There are the internal ones: Retaining newly minted millionaires. Keeping employees focused on great products, rather than just high stock prices. Hanging on to a startup vibe and an entrepreneurial feel even as the social network company balloons in size.

But Zuckerberg will also confront a host of tricky challenges with customers, too. For one, the company has long infuriated its users when changes to its privacy policy are made with little fanfare. Because Facebook was a young startup company, users were angry when such modifications took place, but seemed willing to absolve the company and move on. If there’s a sense that such moves are being made solely to increase profits, benefit Wall Street and boost share prices at the expense of customers, however, users could be much less forgiving.

Rick Santorum’s 3-year-old daughter Bella was admitted to the Children's Hospital in Philadelphia Saturday night, prompting questions of whether the GOP candidate should suspend his presidential campaign to be by her side. (Matt Rourke - AP) Should Rick Santorum get off the campaign trail and go home to his ailing daughter? That’s the question many are posing about the GOP candidate, who has built his campaign on the idea of “faith, family and freedom.” His three-year-old daughter Bella suffers from a genetic disorder known as Trisomy 18, and had a turn for the worse over the weekend when she contracted pneumonia. He says his daughter has had a “miraculous turnaround,” and returned to the campaign trail Monday on the eve of the Florida primary.

Leaders struggle with such personal versus professional conflicts all the time, though they are rarely set up in terms as stark as running for president or being by your gravely ill daughter’s bedside. Usually, the circumstances are far more pedestrian: Should I uproot my family to a new city for a great career move? Should I miss my son’s soccer championship game for a key deadline just before coming up for promotion?   

It could be a monumental week for Facebook, the wildly successful social network, which may file for its initial public offering in the coming days. The IPO, which is expected for the second quarter, could raise as much as $10 billion and could value the social network between $75 billion and $100 billion, the Wall Street Journal is reporting. Anything less than $75 billion would be seen as a disappointment.

Such sky-high expectations will make the challenges for Facebook’s CEO and founder, Mark Zuckerberg, that much harder. Anytime a startup grows up and goes public, it means a host of extraordinary leadership demands, from wrestling with how to incent and reward employees so the stock price doesn’t take on too much weight, to struggling with retaining overnight millionaires who have been critical to the company’s success thus far. Facebook’s IPO is on such a grand scale—if it raises $10 billion, it will be the fourth largest in U.S. history, dwarfing the $1.9 million Google raised in 2004. This could very well exacerbate the challenges for Zuckerberg and his team.

Phil Knight, chairman of Nike, was one of the speakers at a memorial service for former Penn State football coach Joe Paterno. (Alex Brandon - AP) Nike co-founder and chairman Phil Knight has long been known for being unconventional. The man whose company is perhaps best known for its advertising once told his ad agency he doesn’t believe in advertising. When he handed the reins over to a lieutenant in 1983, he disappeared to China (before returning the next year), saying, “I’m splitting from this turkey farm.” Legend holds that few, if any, employees have ever seen his office at Nike’s headquarters, an inner sanctum decked out in Japanese style where no shoes (not even Nikes) are allowed.

He was the same enigmatic man on Thursday when he stood on the Pennsylvania State University campus in the Bryce Jordan Center, in front of gathered Penn State students, administrators and alumni, and basically called the university’s top brass villains. “The matter was in the hands of a world-class university and a president with an outstanding national reputation,” Knight said of the child sexual assault charges facing former Penn State coach Jerry Sandusky that have engulfed the institution. “Whatever the details of the investigation are, this much is clear to me: There is a villain in this tragedy that lies in that investigation, not in Joe Paterno’s response to it.” The comment drew a rousing standing ovation that lasted nearly a minute long.

(Matt Rourke - AP)

I’m starting to think that Newt Gingrich misunderstands the most commonly used meaning of the word “grandiose.” At a campaign stop Wednesday, the winner of the South Carolina GOP primary not only told crowds near Cape Canaveral that he intended to start a colony on the moon, but proudly admitted he is grandiose. ”I was attacked the other night for being grandiose,” reported the Post’s Amy Gardner. “I would just want you to note: Lincoln standing at Council Bluffs was grandiose. The Wright Brothers standing at Kitty Hawk were grandiose. John F. Kennedy was grandiose. I accept the charge that I am grandiose and that Americans are instinctively grandiose.”

Gingrich is referring, of course, to the moment in last week’s debate when Rick Santorum, upon being asked about the former Speaker of the House urging him to get out of the race, replied that “grandiosity has never been a problem with Newt Gingrich.” He went on to accuse Gingrich of having thoughts that weren’t “cogent”: “I’m steady. I’m solid. I’m not gonna go out and do things that you’re gonna worry about.” Gingrich embraced the term during that debate (“you're right: I think grandiose thoughts”) and then doubled down on being identified with it at the event on Wednesday.